Cell Cycle And Cell Division Chapter-Wise Test 5

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is correct about anaphase?

Sister chromatids separate and move to opposite poles
Chromosomes align at the metaphase plate
DNA replication occurs
Chromosomes condense
1

During anaphase, sister chromatids separate and are pulled toward opposite poles by spindle fibers.

Which phase of mitosis immediately follows metaphase?

Prophase
Telophase
Anaphase
Interphase
3

Anaphase follows metaphase, where sister chromatids separate and move to opposite poles.

Which of the following statements about telophase is incorrect?

Nuclear envelope reforms around chromosomes
Chromosomes decondense
Spindle fibers disappear
Sister chromatids remain attached
4

During telophase, sister chromatids have already separated in anaphase; they do not remain attached.

Which of the following is true about the S phase of interphase?

DNA replication occurs, doubling the chromosome number
The cell grows and prepares for mitosis
The cell performs metabolic activities
The nuclear envelope reforms
1

During the S phase, DNA is replicated, doubling the chromosome content of the cell but not the chromosome number.

Which of the following is an example of a cell type that remains in the G0 phase permanently?

Liver cells
Nerve cells
Skin cells
Stem cells
2

Nerve cells enter G0 phase permanently and do not divide after differentiation.

Which of the following statements about meiosis II is correct?

Meiosis II reduces the chromosome number
Meiosis II involves separation of homologous chromosomes
Meiosis II resembles mitosis
Meiosis II produces diploid daughter cells
3

Meiosis II is similar to mitosis in that sister chromatids separate, but it does not reduce the chromosome number further.

Which of the following statements about the quiescent (G0) phase is correct?

Cells in G0 phase are metabolically inactive
Nerve and heart cells enter G0 permanently
Cells in G0 phase cannot re-enter the cell cycle
G0 phase occurs after mitosis and before cytokinesis
2

Nerve and heart cells remain in G0 permanently, while some other cells may re-enter the cycle under specific conditions.

Which of the following structures plays a crucial role in cytokinesis of plant cells?

Cleavage furrow
Centrosome
Cell plate
Aster fibers
3

In plant cells, cytokinesis occurs via the formation of a cell plate, which eventually develops into a new cell wall.

Which of the following is incorrect about the centromere?

It is the region where sister chromatids are attached
Spindle fibers attach to the centromere during cell division
It helps in the separation of homologous chromosomes in meiosis
It disappears during metaphase
4

The centromere remains intact during metaphase and serves as the attachment site for spindle fibers.

Which of the following statements about interphase is incorrect?

Interphase is also called the resting phase
DNA replication occurs in the S phase of interphase
G1 phase follows the S phase
G2 phase prepares the cell for mitosis
3

G1 phase comes before the S phase, not after it.

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